Celestron C8-NGT, C10-N manual Telescope Basics

TELESCOPE BASICS	29
Image Orientation	29
Focusing	30
Aligning the Finderscope	30
Calculating Magnification	30
Determining Field of View	31
General Observing Hints	31
ASTRONOMY BASICS	32
The Celestial Coordinate System	32
Motion of the Stars	33
Finding the North Celestial Pole	35
Declination Drift Method of Polar Alignment	36
CELESTIAL OBSERVING	37
Observing the Moon	37
Lunar Observing Hints	37
Observing the Planets	37
Observing the Sun	37
Solar Observing Hints	38
Observing Deep Sky Objects	38
Seeing Conditions	38
Transparency	38
Sky Illumination	38
Seeing	38
ASTROPHOTOGRAPHY	40
Piggyback	40
Short Exposure Prime Focus Photography	41
Terrestrial Photography	42
Metering	42
Reducing Vibration	42
Auto Guiding	43
TELESCOPE MAINTENANCE	44
Care and Cleaning of the Optics	44
Collimation	44
OPTIONAL ACCESSORIES	48
APPENDIX A – TECHNICAL SPECIFICATIONS	51
APPENDIX B – GLOSSARY OF TERMS	52
APPENDIX C – LONGITUDES AND LATITUDES	55
APPENDIX D – RS-232 CONNECTION	60
APPENDIX E – TIME ZONE MAP	62
SKY MAPS	64

3